Political prisoners must always stop their work and bow deeply or kneel at the arrival of security officers or guards. Failure to do so would invite severe beatings and detention in the jail.

The Kalmaegi brand is the best quality bicycle in North Korea and a popular gift item from the Great leader or Dear leader. The bicycle is produced by prisoners in Life Detention Settlement No. 25, Chongjin city of North Hamkyong Province.

The bicycle is a status symbol and settlement officers ride these bicycles smugly.